腐殖酸存在下生态毒性物质光致降解的荧光分析
Fluorescence analysis of photoinduced degradation of ecotoxicants in the presence of humic acids.
作者信息
Tchaikovskaya O N, Sokolova I V, Yudina N V
机构信息
Tomsk State University, 36 Lenine Ave, Tomsk 634050, Russia.
出版信息
Luminescence. 2005 May-Jun;20(3):187-91. doi: 10.1002/bio.818.
The photolysis of humic acids and phenols in water containing humic acids was investigated. Humic acids extracted from peat (Vasuygan Bog, Tomsk Region, Russian Federation) induce the phototransformation of 4-chlorophenol at 365 and 222 nm. Humic acids were characterized by UV-, fluorescence-, IR- and EPR-spectroscopy and laser-induced fluorescence. The influence of humic acids on the phototransformation of phenols in different irradiation conditions was investigated. Comparison of the data on mercury lamp irradiation showed that the most effective phenols degradation was observed under exposure to KrCl* exilamp light (lambda = 222 nm) in the presence of humic acids.
研究了腐殖酸和酚类在含腐殖酸的水中的光解作用。从泥炭（俄罗斯联邦托木斯克地区瓦苏甘沼泽）中提取的腐殖酸在365和222 nm波长下可诱导4-氯酚的光转化。通过紫外光谱、荧光光谱、红外光谱、电子顺磁共振光谱和激光诱导荧光对腐殖酸进行了表征。研究了腐殖酸在不同辐照条件下对酚类光转化的影响。汞灯辐照数据的比较表明，在腐殖酸存在下，暴露于KrCl*准分子灯（波长λ = 222 nm）时，酚类降解效果最为显著。
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